Revert of Move gpu memory calculations to Compositor.

blimp/client/compositor/blimp_context_provider.cc

Index: blimp/client/compositor/blimp_context_provider.cc
diff --git a/blimp/client/compositor/blimp_context_provider.cc b/blimp/client/compositor/blimp_context_provider.cc
index 24be45555188535310012bb6fe58f03fa6299f79..92a6f0d770d5de0e56e4588634a63e423eb91e69 100644
--- a/blimp/client/compositor/blimp_context_provider.cc
+++ b/blimp/client/compositor/blimp_context_provider.cc
@@ -152,6 +152,12 @@ void BlimpContextProvider::SetLostContextCallback(
   lost_context_callback_ = lost_context_callback;
 }
 
+void BlimpContextProvider::SetMemoryPolicyChangedCallback(
+    const MemoryPolicyChangedCallback& memory_policy_changed_callback) {
+  // There's no memory manager for the in-process implementation.
+  // TODO(dtrainor): Figure out if we need a memory manager for Blimp.
+}
+
 void BlimpContextProvider::OnLostContext() {
   DCHECK(context_thread_checker_.CalledOnValidThread());
   if (!lost_context_callback_.is_null())